Python-Multipart has Arbitrary File Write via Non-Default Configuration

Python-Multipart is a streaming multipart parser for Python. Prior to version 0.0.22, a Path Traversal vulnerability exists when using non-default configuration options `UPLOAD_DIR` and `UPLOAD_KEEP_FILENAME=True`. An attacker can write uploaded files to arbitrary locations on the filesystem by crafting a malicious filename. Users should upgrade to version 0.0.22 to receive a patch or, as a workaround, avoid using `UPLOAD_KEEP_FILENAME=True` in project configurations.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

对路径名的限制不恰当(路径遍历)

python-multipart 路径遍历漏洞

python-multipart是Marcelo Trylesinski个人开发者的一个Python的流式多部分解析器。 Python-Multipart 0.0.22之前版本存在路径遍历漏洞，该漏洞源于使用非默认配置选项UPLOAD_DIR和UPLOAD_KEEP_FILENAME=True时存在路径遍历问题，可能导致上传文件到任意位置。

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